(19)

(11)

EP 4 069 429 A1

(12)

(43) Date of publication: 12.10.2022 Bulletin 2022/41 (21) Application number: 20896433.8 (22) Date of filing: 03.12.2020

(51) International Patent Classification (IPC):  B02C 18/22(2006.01) B02C 18/18(2006.01) B02C 18/06(2006.01) B02C 18/24(2006.01) (52) Cooperative Patent Classification (CPC): B27L 11/002; B27L 1/00; B27L 11/00 (86) International application number: PCT/US2020/063061 (87) International publication number: WO 2021/113476 (10.06.2021 Gazette 2021/23)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 03.12.2019 US 201962942951 P (71) Applicant: ASTEC INDUSTRIES, INC. Chattanooga, TN 37407 (US)	(72) Inventor: ANDERSON, Nathan Harrisburg, OR 97446 (US) (74) Representative: Fabiano, Piero  Fabiano, Franke & MGT Sagl Piazzetta San Carlo, 2 6900 Lugano 6900 Lugano (CH)